[Greenbuilding] Manual J calculations and Geothermal heat pumps

[Keith Winston]

Hi Stephen, I've never even heard of Hydron Module, I wonder if it's a 
relabeling of another brand.

I use HVAC-calc, which costs $400 I think but they also sell a 
single-house version for $50. I used it on a single house years ago, 
before I bought the full version. It's definitely not perfect, but it's 
reasonably fast and appears to be reasonably accurate.

Keith


Stephen wrote:
> I am starting a house that will have geothermal heat pumps for heating and cooling. 
>
> I am getting some conflicting feedback on sizing from two different subs. I would like to do Manual J calculations to test the numbers. Does anyone know of software available as a demo (or free) that will allow me to do this? I know I can purchase the software for $300 or more, but this will be a one time affair and do not want to pay for that. The demos I have seen will let you do 3 rooms or will not permit printing or saving - not terribly useful.
>
> One of the subs is proposing Hydron Module as the manufacturer of the heat pumps. Anyone out there with experience with this brand - good or bad?
>
> TIA
>
> Stephen Levine
>
> _______________________________________________
> Greenbuilding email list
> List info: http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org
> List email: Greenbuilding at listserv.repp.org
> Managed by BuildingGreen, Inc. http://www.buildinggreen.com
>       publisher of Environmental Building News and GreenSpec(r)
> Hosted and archived by REPP / CREST http://www.crest.org
>
>
>
>
>   

-- 
Keith Winston
Earth Sun Energy Systems
3927 Madison St.
Hyattsville, MD 20781
301-980-6325
keith at earthsunenergy.com
www.EarthSunEnergy.com